A pollution risk assessment and source analysis of heavy metals in sediments: A case study of Lake Gehu, China

Chen, Yuefang; Shi, Qingyun; Qu, Jinyan; He, Meng-xue; Liu, Qian

doi:10.1016/j.cjac.2022.100077

Cited by 25 publications

(20 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where C i s represents the concentration of the studied heavy metal (i) in sediments, C i n is the background value of the studied heavy metal (i) (Arisekar, Shakila, Shalini, Jeyasekaran, Keerthana, et al, 2022;Zhai et al, 2021), C i f is the pollution factor and T i r is the biological toxicity factor of the heavy metal (i), and E i r is the calculated RI of a single heavy metal Chen, Shi, et al, 2022;Zeng et al, 2020). The evaluation criteria of RI include the following four levels: low ecological risk (RI ≤ 150); moderate ecological risk (150 < RI ≤ 300); considerable ecological risk (300 < RI ≤ 600); and very high ecological risk (RI > 600) (Fan, Jian, et al, 2021).…”

Section: Rimentioning

confidence: 99%

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Verpoort

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

The Salt River is an important urban river in Kaohsiung, Taiwan. In this study, the source identification and risk and toxicity assessment of the heavymetal-contaminated sediments in the Salt River were investigated. The geo-accumulation index (Igeo), enrichment factor (EF), sediment quality guidelines (SQGs), potential ecological risk index (RI), pollution load index (PLI), and toxic units (TU) were applied to determine effects of heavy metals on microbial diversities and ecosystems. Results from the ecological and environmental risk assessment show that high concentrations of Zn, Cr, and Ni were detected in the midstream area and the sum of toxic units (ΣTUs) in the midstream (7.2-32.0) is higher than in the downstream (14.0-19.7) and upstream (9.2-17.1). It could be because of the continuous inputs of heavymetal-contained wastewaters from adjacent industrial parks. Results also inferred that the detected heavy metals in the upstream residential and commercial areas were possibly caused by nearby vehicle emissions, non-point source pollution, and domestic wastewater discharges. Results of metagenomic assays show that the sediments contained significant microbial diversities.Metal-tolerant bacterial phyla (Proteobacteria: 24.4%-46.4%, Bacteroidetes:1.3%-14.8%, and Actinobacteria: 2.3%-11.1%) and pathogenic bacterial phyla (Chlamydiae: 0.5%-37.6% and Chloroflexi: 5.8%-7.2%) with relatively high abundance were detected. Metal-tolerant bacteria would adsorb metals and cause the increased metal concentrations in sediments. Results indicate that the bacterial composition in sediment environments was affected by anthropogenic pollution and human activities and the heavy-metal-polluted ecosystem caused the variations in bacterial communities.

show abstract

Section: Rimentioning

confidence: 99%

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Verpoort

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…The enrichment factor (EF) was used to assess the degree of pollution in the sediment to identify various sources of pollution, including natural processes or anthropogenic activities [32]. EF was calculated by Equation ( 1): EF = (C X /C Fe ) sediment /(C X /C Fe ) reference (1) where (C X /C Fe ) sediment is the ratio of metal and Fe concentrations in the sediment sample and (C X /C Fe ) reference is the ratio of metal and Fe concentrations in the background [33].…”

Section: The Enrichment Factor (Ef)mentioning

confidence: 99%

“…Over the past decades, rapid population growth and extensive economic development has led to increased environmental pollution in coastal areas. Various human activities in coastal areas negatively affect the coastal environment because they release pollutants into the marine environment through point sources such as industry, tourism, household activities, and agricultural activities [1][2][3]. Among the various types of pollution, heavy metals are considered to cause critical environmental problems due to their toxicity, persistence in nature, and bioaccumulation in ecosystems [4,5].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Contamination and Ecological Risk Assessment in the Sediment Cores of the Wetlands in Southern Thailand

Pradit

Noppradit

Jitkaew

et al. 2022

JMSE

View full text Add to dashboard Cite

The concentration and distribution of trace metals were determined in sediment cores from the Khuan Khi Sian wetland, Thailand. The sediment cores were collected from seven stations in the dry and wet seasons in 2022. The concentration of Pb, As, and Cd in the dry season were in the range 0.00–60.16, 0.00–6.68, and 0.00–0.92 mg/kg (dry weight), respectively. Meanwhile, the concentration of Pb, As, and Cd in the wet season were in the range 0.00–12.12, 0.00–3.86, and 0.00–0.92 mg/kg (dry weight), respectively. The vertical profiles of metal concentrations in core sediment show a general increase from bottom to top. Average concentrations of heavy metals in the sediments of the Khuan Khi Sian wetland are found to be lower than the sediment quality guideline. In the sediment cores, only As in the dry season exceeded the U.S. EPA standard. The calculated enrichment factor (EF) and the geoaccumulation index (Igeo) indicate that the sediments were moderately polluted with As in some locations. According to the Ri analysis, Pb was low risk but the criteria of ecological risk of As and Cd are considerable and they are considered high risk. This is potentially due to agricultural activities and land use around the wetland areas and municipalities. The concentration of As and Cd should be of concern and subject to regular monitoring.

show abstract

“…These substrates are considered memory indicators for this kind of pollution. This fact is illustrated by numerous recent scientific works, such as those by Kalkan [2], Shetaia et al [3] and Chen et al [4]. One of the most explored axes in this kind of study is the approach to knowledge of the trace metals behaviors in them, particularly their seasonal dynamics [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Trace Metals Behaviors in the Superficial Sediments from a Tropical Lagoon

Arthur

Konan

Stephane

et al. 2022

EJCS

View full text Add to dashboard Cite

The aim of this study is to assessment the effects of the seasonal water inputs on the seasonal dynamic of trace metals in the superficial sediments from the lagoon area II of Ébrié system. This study was implemented during one year (from June 2020 to May 2021) and all the physical and chemical parameters of these sediments, used in this study, were all obtained according to AFNOR standards. In hot season, the trace metal contents of these sediments, dominated by coarse sands in all seasons, were on the whole favored by the marine inputs; which would induce their very slightly basicity and reduce characters, low salinity and conductivity. However, the majority of their trace metals content decreases in rainy season with the meteorite inputs; would induce their slightly acidic and oxidizing characters and, the increase in their salinity and conductivity. These were again for the slightly basic and reduce characters of the open waters at the interface water-sediment, as their relative important salinity, conductivity and organic matter content in this season. The same effects were observed in flood season but a less marked by the important presence of Comoé river in this ecosystem.

show abstract

A pollution risk assessment and source analysis of heavy metals in sediments: A case study of Lake Gehu, China

Cited by 25 publications

References 56 publications

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Toxicity evaluation of a heavy‐metal‐polluted river: Pollution identification and bacterial community assessment

Heavy Metal Contamination and Ecological Risk Assessment in the Sediment Cores of the Wetlands in Southern Thailand

Trace Metals Behaviors in the Superficial Sediments from a Tropical Lagoon

Contact Info

Product

Resources

About